"I'll tell you, The Runaways, when we started, we didn't have this sort of craziness around us. Really the only time when there was insanity, as far as the press goes, was Japan ... it wasn't a 24-hour media world at that point," Jett told PEOPLE at the Tommy Hilfiger-sponsored New York premiere of The Runaways, which portrays the ascent of Jett and Cherie Currie to rock icons. "I think it's very difficult if you had to be dealing with this all the time. It's tough to incubate and do the work you need to do with people in your face."